United States Army Field Manual FM 24-5 Basic Field Manual Signal Communication. 1942-10-19
"To insure successful signal communication, the signal and communication troops must work as a team regardless of unit, arm, or service. There must exist a spirit of mutual helpfulness and cooperation. Signal communication personnel at any headquarters should become personally acquainted with personnel at other headquarters with whom they communicate directly. This includes units in all relationships (supported, supporting, superior, subordinate, adjacent, and attached) and is regardless of the point at which the responsibility for communication is fixed. Personal contact promotes a better understanding of the special problems and conditions which exist at each headquarters and permits full assistance and cooperation in the installation, operation, and maintenance of signal communication."
Digitized by the Combined Arms Research Library (CARL) Digital Library, US Army Combined Arms Center. http://cgsc.cdmhost.com/cdm/